BitLocker on SSD drives with TRIM

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  Here is a Samsung article talking about the performance penalty of using software-based encryption with their SSDs:

  http://www.samsung.com/global/business/semiconductor/products/SSD/downloads/SamsungSSD_Encryption_Benchmarks_201011.pdf

  But it doesn't talk about endurance and TRIM compatibility in Windows 7.  I'm mainly interested in whether (or how much) the use of BitLocker will shorten the lifespan of an SSD drive, if someone has any info on this. 

  Thanks!

   

  Thursday, October 13, 2011 10:47 PM
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  "When Bitlocker is first configured on a partition, the entire partition is read, encrypted and written back out. As this is done, the NTFS file system will issue Trim commands to help the SSD optimize its behavior."

  http://blogs.msdn.com/b/e7/archive/2009/05/05/support-and-q-a-for-solid-state-drives-and.aspx

  --Steven Sinofsky, Microsoft

   

  • Proposed as answer by zhen tan Monday, October 17, 2011 7:22 AM
  • Marked as answer by Robinson Zhang Tuesday, November 8, 2011 8:25 AM

  Friday, October 14, 2011 2:56 AM
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  I've been using Bitlocker with and without a SSD. I've written my experiece under the following link

  http://superuser.com/questions/235420/bitlocker-performance-impact-on-ssd

  This link also contains, more comprehensive info., on SSD and Bitlocker compatiblity.

   

  Thanks

  • Marked as answer by Robinson Zhang Tuesday, November 8, 2011 8:25 AM

  Thursday, October 27, 2011 7:50 PM
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  Engineering Windows 7
  MSDN Blogs > Engineering Windows 7 > Support and Q&A for Solid-State Drives
  http://blogs.msdn.com/b/e7/archive/2009/05/05/support-and-q-a-for-solid-state-drives-and.aspx

  "Is Bitlocker’s encryption process optimized to work on SSDs?
  
  Yes, on NTFS. When Bitlocker is first configured on a partition, the entire partition is read, encrypted and written back out. As this is done, the NTFS file system will issue Trim commands to help the SSD optimize its behavior.
  
  We do encourage users concerned about their data privacy and protection to enable Bitlocker on their drives, including SSDs."

  Saturday, May 12, 2012 3:50 PM